NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Red cell volume with changes in plasma osmolarity during maximal exercise.The volume of the red cell in vivo was measured during acute changes in plasma osmolarity evoked through short (6 to 8 min) maximal exercise in six male volunteer subjects. Simultaneous measurements of mean corpuscular red cell volume (MCV), hematocrit, blood hemoglobin, mean corpuscular hemoglobin concentration (MCHC), and plasma osmolarity showed that there was no change in the MCV or MCHC with a concomitant rise of nearly 6% in plasma osmolarity. Apparently, in vivo, the volume of the red cell in exercising healthy human subjects does not change measurably, in spite of significant changes in osmotic pressure of the surrounding medium. Consequently, it is not justified to correct postexercise hematocrit measurements for changes in plasma osmolarity.
Document ID
19730051852
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Van Beaumont, W.
(St. Louis University St. Louis, Mo., United States)
Date Acquired
August 7, 2013
Publication Date
July 1, 1973
Publication Information
Publication: Journal of Applied Physiology
Volume: 35
Subject Category
Biosciences
Accession Number
73A36654
Funding Number(s)
CONTRACT_GRANT: NGR-26-006-039
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available